Definitions for "D65"
Is the standard point (x=0.3127, y=0.329) in perceptual color space used to define the standard for gray for NTSC and HDTV video. Your display will not accurately display the image if it does not closely match D65 when no color is present in the image. This is due to the way an image is created by painting colors on top of the base gray image. The D65 image in essence is the color of the canvas that your TV uses to display a picture. The closer an image is to gray the more it will be in error if your display is not calibrated to D65. A quality display calibration must include verification or calibration that a display adheres to the D65 standard.
The CIE Standard Illuminant that represents a daylight-correlated color temperature of 6500 Kelvins. Widely used as a standard color temperature for calibrated monitors.
The CIE Standard Illumination that represents a color temperature of 6504°K. This is the color temperature that is most widely used in graphic arts industry viewing booths. See Kelvin (K).